The sum of the digits of a 2 digit number is 12,If 18 is added to it, the digits in the number are reversed.Find the number.
Answers
Answered by
5
here is your ans
your answer is 57
5+7=12
&
57+12=75
I will also explain in one variable hope it helps
let we suppose x on both sides
like the ans is 57x so,
5x+7x=12x
&
57x+18x=75x
your answer is 57
5+7=12
&
57+12=75
I will also explain in one variable hope it helps
let we suppose x on both sides
like the ans is 57x so,
5x+7x=12x
&
57x+18x=75x
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Answered by
3
x+y= 12
(10x+y) - (10y+x)=18
Simplify the equation,
x+y=12
9x-9y=18
Multiply both side of equation 9
9x+9y=108
9x-9y= 18
subtract equation 2 from equation 1
18y=90
y=5(x+y=12)
x+5=12
x=7
Now let's check that 75 actually answer the question
5+7=12
75-57=18
The original Answer is 75.
Mark as brain least.
(10x+y) - (10y+x)=18
Simplify the equation,
x+y=12
9x-9y=18
Multiply both side of equation 9
9x+9y=108
9x-9y= 18
subtract equation 2 from equation 1
18y=90
y=5(x+y=12)
x+5=12
x=7
Now let's check that 75 actually answer the question
5+7=12
75-57=18
The original Answer is 75.
Mark as brain least.
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